CVE-2026-21514 - Vulnerability Details

Threat entity extracted from intelligence sources

Frequency
10
occurrences
First Seen
February 10, 2026
Last Seen
March 17, 2026

CVE-2026-21514 is a vulnerability tracked across 5 threat clusters and 10 intelligence report mentions on ThreatCluster. First observed February 10, 2026; most recent activity March 17, 2026.

Related Threat Clusters

  • Microsoft Word Vulnerability CVE-2026-21514 Exposes Millions to Malware Attacks

    CVE-2026-21514 is a security feature bypass vulnerability in Microsoft Word, disclosed on February 10, 2026. This flaw allows attackers to exploit nearly 14 million assets across seven Tier 1 countries, primarily in the…

    5 articles · Updated March 18, 2026
  • Microsoft Addresses Six Actively Exploited Zero-Day Vulnerabilities

    On February 10, 2026, Microsoft released a security update addressing 59 vulnerabilities, including six zero-day flaws that were actively exploited prior to the patch. The vulnerabilities affect various Microsoft…

    70 articles · Updated February 10, 2026
  • Microsoft Word Vulnerability CVE-2026-21514 Exploited

    A newly discovered vulnerability in Microsoft Word, tracked as CVE-2026-21514, allows attackers to bypass key security features using specially crafted documents. This flaw was published on February 10, 2026, and has…

    3 articles · Updated February 11, 2026
  • Critical Windows Shell Zero-Day Vulnerability Exploited

    Microsoft has released updates to address a critical zero-day vulnerability in Windows Shell, tracked as CVE-2026-21510, which is actively being exploited. This security flaw allows remote attackers to bypass essential…

    5 articles · Updated February 11, 2026
  • February 2026 Patch Tuesday Addresses Multiple Vulnerabilities

    On February 10, 2026, Adobe and Microsoft released security patches addressing numerous vulnerabilities, including 36 CVEs published on the same day. Notably, three CVEs (CVE-2026-21510, CVE-2026-21514, and…

    1 article · Updated February 10, 2026

Recent Intelligence Reports

  • FAQ on CVE-2026-21514: OLE bypass N — Tenable · March 17, 2026
  • Microsoft Office Word 0 — Cybersecuritynews · February 11, 2026
  • Microsoft Word Zero — Cyberpress · February 11, 2026
  • Patch Tuesday - February 2026 — Rapid7 · February 11, 2026
  • February 2026 Patch Tuesday: Six new and actively exploited Microsoft vulnerabilities addressed — Csoonline · February 11, 2026
  • February 2026 Patch Tuesday: Critical Microsoft CVEs & Fixes — Absolute · February 10, 2026
  • Microsoft Patch Tuesday matches last year’s zero — Cyberscoop · February 10, 2026
  • The February 2026 Security Update Review — Thezdi · February 10, 2026

CVSS v3.1 Breakdown